U.S. May Have 2nd Mad-Cow Case

The Agriculture Department may have uncovered a second case of mad-cow disease, elevating fears that the brain-wasting disease might be spreading in the U.S. cattle herd.

Federal officials said they managed to keep the meat of this suspect animal out of the food supply -- unlike the case of the first infected cow discovered last December. Still, the USDA put such a tight lid on any other information about the animal, which was flagged by a preliminary rapid-screening test, that food-industry officials could only speculate...